High Voltage

We'll do this activity together!

Transformers:

a. Go to: PhET Faraday's Electromagnetic Lab and click on Run Now.
b. Click the tab for transformer.

1. Describe how the energy from the battery reaches the light bulb.
2. What effect does changing the number of coils or the size of the coils have on the brightness of the light bulb?
3. Describe how this principle could be used to change the voltage of AC current.
4. Explain why this device is not effective when used with DC current. (hint—look at the changes of the magnetic field

Transformers Notes

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